EMPro 2011: Integrated 3D EM Simulation Technology

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Integrated 3D EM Simulation Technology

Outline

• Introduction

• EMPro Overview

• 3D EM Simulation Technology Overview

• ADS-EMPro integration

• Overview new capabilities EMPro 2011

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Importance of 3D EM Market to Agilent

Increased RF integration leading to higher need for 3D EM technology in the flow

• IC Packaging

• Multi-chip RF Modules

• Antennas

• High speed connectors• High speed connectors

Survey: 51% of ADS users also using 3rd Party 3D EM software

High-Frequency / High-Speed Designers need 3D EM simulation in their design flow

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ADS Layout Export GDS fileImport GDS file

into other 3rd party EM tools

Re-Assign material information

Set up geometry & ports for

Export port locations to a .MSK file

10 min.

30 min.

30 min.20 min.

STARTR

EP

EA

T

Case Study: 2 Hours of manual data transfer per simulation

EMTech file

Duplicate layer infomration

ADSTech file

ports for simulation

Run custom program to create script file to auto-generate ports in 3rd party EM tools

Auto-generate Ports

(For complex designs) Run EM simulation for S-parameters

Import S-parameters from EM tool into ADS

Reconnect Ports from EM with other passives and actives for co-simulation and verification

30 min.

Hours of Simulation

10 min.

20 min.END

RE

PE

AT

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3D EM Product VisionProvide the industry’s most complete selection of EM simulation technologies (MoM, FEM and FDTD) closely integrated in a consistent design flow and suited to our customer’s applications.

MMIC RF Board

SI Antenna modeling3D packages/IC

RFIC

Connectors

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3D EM Platform Release History

EMPro 2008

FEM Simulator

EMDS

EMPro 2009EMPro 2010 May 2010EMPro 2010.07 July 2010EMPro 2011.02 February 2011EMPro 2011.04 April 2011

AMDS

FDTD Simulator

FDTD Simulator FEM & FDTD Simulators

EMPro 2011.04 April 2011EMPro 2011.07 July 2011EMPro 2011.11 Nov 2011

January 2010

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Agilent EM Simulation Portfolio

ADS EMProParameterized

3D EM Components

EMDS-for-ADS

ADS Layout Export

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FDTD SimulatorFinite Difference

Time Domain

FEM SimulatorFinite Element Method

Momentum SimulatorMethod of Moments

EMDS

EMDS-for-ADS

3D EM Component Import Capability

Create 3D EM Component in EMPro

Import 3D EM Component into ADS and place in layout

2D View 3D View

1 2

Run FEM simulation of 3D EM Component + Layout in ADS

Add schematic components and run FEM / circuit co-sim

3 4

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Additional Platform Links

ADS Platform EMPro EnvironmentParameterized

3D EM Components

ADS Layout Export

CadenceAllegroPCB/SiP

MentorExpedition

CadenceVirtuoso

AMDS

FDTD SimulatorFinite Difference

Time Domain

FEM SimulatorFinite Element Method

Momentum SimulatorMethod of Moments

EMDS

AgilentGenesys

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EMPro Overview

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EMPro 3D EM Modeling Environment

• Interactive, Intuitive, Efficient, 3DEM design Environment

• Full Wave 3D EM FEM and FDTD Simulation Technologies

• Parameterize 3D EM components for co-simulation & optimization in ADS

• Transfer ADS Layouts to EMPro for • Transfer ADS Layouts to EMPro for additional 3D-EM simulation

• Full scripting (Python) and parameterization capability

• Windows & Linux

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Advanced 3D Modeling Tools

Revolve Draft By Angle Draft By Law

Chamfer Edges Blend Edges

Shell

Loft Faces

Twist Hole w/wo Draft Hole Special

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• Quickly create common shapes

• Easily parameterized and modified from the standard parts tree

Geometry Building Blocks

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Bondwire Components

Define endpoints by simply selecting faces on existing geometry

Use standard JEDEC profile, or create custom profiles

on existing geometry

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• Use materials from the default library, or create your own

• Simply drag and drop material definitions onto parts

• Support for complex permittivity materials

Material Definitions and Assignments

Default Library

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Importing CAD Files in EMPro

• EMPro allows import of various industry standard CAD formats

Supported CAD formats

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Import PCB Designs with ODB++ File Support

Select layers and nets to be imported

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Cadence Allegro PCB Design Import

• Select critical nets to import

• Use “Cookie Cutter” to select portion of power and ground planes to import

• Passive SMD components imported as RLC ports

• Bondwires and solder balls imported as parameterized 3D objectsas parameterized 3D objects

• Supports Cadence SPB 16.01+

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Results Display

• Standard plots

• Advanced field visualization & animation

• Mesh view

• Connectivity view

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Additional UI Tools

• Toolbars and hotkeys

– Fully customizable, dockable, portable

• Cut planes

– Easily view internal details– Easily view internal details

– Snap new objects to cut planes

• 3D visualization

– 3D field strength plots

– Maximum field locator

May 20112011 HIT - Agilent Confidential

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3D EM Simulation Technology Overview

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Finite Element Method (FEM)

• Full 3D, Frequency Domain technology

• Key Strengths:

– High Q applications

– Multiport simulation

• Multi-threaded solvers

– Direct solver – fast, accurate

– Iterative solver* – memory efficient– Iterative solver* – memory efficient

• Adaptive mesh refinement

• FEM capabilities in ADS:

– Co-simulation with circuit schematic

– Parameterized sweeps and optimization

– Advanced Model Composer

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* Multi-threaded in EMPro 2011.07

FEM Adaptive Mesh Refinement

• 3D geometry is partitioned into a mesh of tetrahedrons

• Simulation is performed at adaptive frequency (the highest simulation frequency by default)

• Mesh is refined where signal energy is greatest• Process is completed when error tolerance is met

between consecutive passesbetween consecutive passes

3/15/2012FEM in ADS

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1st Pass 5th Pass 12th Pass

FEM Port Types

• Waveguide ports

– Most accurate

– Must be placed outside 3D structure

• Internal ports

– Voltage / Current ‘line’ sources that can be placed inside 3D structure

– Include parasitic inductance that may – Include parasitic inductance that may reduce simulation accuracy

• Internal sheet ports

– Voltage / Current planar sources that can be placed inside the 3D structure

– Reduced parasitic inductance compared to standard internal port

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FEM Eigenmode Solver

• Quickly determine resonant frequencies of cavity structures

• Based on FEM technology

May 20112011 HIT - Agilent Confidential

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Resonant frequencies and quality factors

Finite Difference Time Domain (FDTD)

• Full 3D, Time Domain

• Key Strengths:

– Memory efficient for large problems

– GPU acceleration support

• Typical Applications:

– TDR

t1

– Antennas

– Bio (e.g., SAR)

– EMI

t2

t3

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FDTD GPU Acceleration

• FDTD Time Domain Simulation can be accelerated using GPU (Graphics Processing Unit) cards

3x4x5x6x7x8x9x

10x

GPU Acceleration(Normalized Speed)

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0x1x2x3x

4xCPU 1xC1060 GPU

1xC2070 GPU

2xC2070 GPU

2 GPU cards can speed FDTD simulations 10x

FDTD Conformal Meshing

• Mesh cells now ‘conform’ to non-orthogonal geometries

• Improved accuracy & efficiency

Non-Conformal

With Conformal

Non-Conformal

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With Conformal

With Conformal

Conformal meshes support GPU acceleration in 2011.07

ADS-EMPro integration

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EMPro: 3 Levels of Integration with ADS

1. S-parameter Export

EMPro ADS

Run FEM / FDTD in EMPro

Export S-parameter file to ADS

Run Circuit Simulation in ADS

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EMPro: 3 Levels of Integration with ADS

1. S-parameter Export

2. One-click Layout Import

One-Click Export

EMPro ADS

• Add 3D model• Run FEM / FDTD in EMPro

Create Layout in ADS

Export

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EM ports and material properties automatically maintained

EMPro: 3 Levels of Integration with ADS

1. S-parameter Export

2. One-click Layout Import

3. 3D EM Component Export

Export 3D EM

EMPro ADS

Create 3D model in EMPro

Export 3D EM Component

FEM Simulation of 3D Component +

2D Layout in ADS

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3D Component fully parameterized

EMPro 2011 New Capabilities

Simulation Technology

• FDTD Conformal meshing

• Eigenmode solver

• FEM 2D Port Solver

• FEM automatic conductor edge meshing

Modeling Environment

• Genesys Layout Import

• Allegro import

• Toolbars & hotkeys

• Cut planes

• Field visualization enhancements• FEM Passive Loads

• FEM Multithreaded Iterative Solver

• FEM Broadband mesh refinement

• Multi-threaded far field calculations

• Djordjevic dielectric loss modeling

• Field visualization enhancements

• TDR analysis features

• 3D building blocks

• Extrude / revolve faces of existing object

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EMPro - Summary

• Modern 3D modeling environment

• Frequency and Time domain simulation technologies

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• Tightly integrated with ADS